Phylum

attempt to access beyond end of device

Sep 24th, 2012
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  1. # Recently, in the last few weeks, my box has started to become increasingly unstable.
  2. # I'm not aware of any significant changes having been made, hardware or software wise
  3. # other than the usual periodic `yum update`
  4. # Several months ago (at least year+ now) I did resize one of the partitions as I moved
  5. # data around to a new VMDK. Perhaps this is the root cause.
  6.  
  7. # This morning (9/24) it tanked again but this time I saw a 'kernel: journal commit I/O error'
  8. # on the console. The box was nonresponsive so I rebooted it. The box came back up and again
  9. # within 30-40 minutes or so it became non responsive. Usually services start to fail like
  10. # Apache, mail & SQL. After a reboot it was up for about an hour but starting at
  11. # 11:40:47 AM EST, it started spewing errors in /var/log/messages.
  12.  
  13. # I have no software or hardware RAID setup on this box.
  14. # This is a virtual machine (on ESXi) that sits on a NAS.
  15. # The NAS is setup for RAID5.
  16.  
  17. # I've been told two things thus far
  18. # 1) filesystem larger than your partition
  19. # 2) problem may be that you already resized the volume but not the filesystem, so to fix
  20. # you need to make it the original size again then resize the f/s then the volume
  21. # For starters, I have no idea what the exact sizes of these were back then!
  22. # Second, I'm not sure how I can resize the filesystem to match the current volume size
  23. # without losing data (without dd'ing to another device then dd'ing back)
  24. ###################################################################################################
  25.  
  26. # cat /etc/redhat-release
  27. CentOS release 5.8 (Final)
  28.  
  29. # kernel
  30. 2.6.18-308.13.1.el5
  31.  
  32. # fdisk -ul /dev/sda
  33.  
  34. Disk /dev/sda: 42.9 GB, 42949672960 bytes
  35. 255 heads, 63 sectors/track, 5221 cylinders, total 83886080 sectors
  36. Units = sectors of 1 * 512 = 512 bytes
  37.  
  38. Device Boot Start End Blocks Id System
  39. /dev/sda1 * 63 208844 104391 83 Linux
  40. /dev/sda2 208845 31459327 15625241+ 83 Linux
  41. /dev/sda3 31664115 63119384 15727635 83 Linux
  42. /dev/sda4 63119385 83875364 10377990 5 Extended
  43. /dev/sda5 63119448 73609829 5245191 83 Linux
  44. /dev/sda6 73609893 75714344 1052226 82 Linux swap / Solaris
  45. /dev/sda7 75714408 77811711 1048652 83 Linux
  46.  
  47.  
  48. # mount
  49. /dev/sda7 on / type ext3 (rw,usrquota)
  50. proc on /proc type proc (rw)
  51. sysfs on /sys type sysfs (rw)
  52. devpts on /dev/pts type devpts (rw,gid=5,mode=620)
  53. /dev/sdb1 on /home type ext3 (rw,usrquota)
  54. /dev/sda5 on /tmp type ext3 (rw,noexec,nosuid)
  55. /dev/sda3 on /usr type ext3 (rw,usrquota)
  56. /dev/sda2 on /var type ext3 (rw,usrquota)
  57. /dev/sda1 on /boot type ext3 (rw)
  58. tmpfs on /dev/shm type tmpfs (rw,noexec,nosuid)
  59. none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
  60. /tmp on /var/tmp type none (rw,noexec,nosuid,bind)
  61.  
  62. # handful of entries from var/log/messages
  63. Sep 24 11:40:47 srv11 kernel: attempt to access beyond end of device
  64. Sep 24 11:40:47 srv11 kernel: sda2: rw=0, want=6466685320, limit=31455270
  65. Sep 24 11:40:47 srv11 kernel: attempt to access beyond end of device
  66. Sep 24 11:40:47 srv11 kernel: sda2: rw=0, want=6466685320, limit=31455270
  67. Sep 24 11:40:47 srv11 kernel: attempt to access beyond end of device
  68. Sep 24 11:40:47 srv11 kernel: sda2: rw=0, want=6466685320, limit=31455270
  69. ...
  70. Sep 24 11:40:48 srv11 kernel: attempt to access beyond end of device
  71. Sep 24 11:40:48 srv11 kernel: sda2: rw=0, want=6466685320, limit=31455270
  72. Sep 24 11:40:48 srv11 kernel: attempt to access beyond end of device
  73. Sep 24 11:40:48 srv11 kernel: sda2: rw=0, want=7273095608, limit=31455270
  74. Sep 24 11:40:48 srv11 kernel: attempt to access beyond end of device
  75. Sep 24 11:40:48 srv11 kernel: sda2: rw=0, want=6065068504, limit=31455270
  76. Sep 24 11:40:48 srv11 kernel: attempt to access beyond end of device
  77. Sep 24 11:40:48 srv11 kernel: sda2: rw=0, want=15083465552, limit=31455270
  78. ...
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